World 47K 20mm f/2.5
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| Weight: | 450 g |
| Brand: | Zenith |
| Description: | Mount: Pentax KA/KAF/KAF2/KAF3, lens type: wide-angle, focal length: fixed, prime lens focal length: 20 mm, aperture F at min. focal length: 2.50 |
| Type: | Lens |
| Length: | 65 mm |
| Diameter: | 82 mm |
| Focal length: | Permanent |
| Lens type: | Wide angle |
| Minimum focus distance: | 0.3 m |
| Focal length of prime lens: | 20 mm |
| Bayonet: | Pentax KA/KAF/KAF2/KAF3 |
| Aperture F at min. focal length: | 2.5 |
| Minimum aperture F: | 22 |
| Number of element groups: | 9 |
| Number of elements: | 10 |